commit 35ebb934bd7fcc7ca991b155b7980c3c4ff9f1a5
author Chris Mason <chris.mason@oracle.com> Tue Oct 30 16:56:53 2007 -0400
committer Chris Mason <chris.mason@oracle.com> Thu Sep 25 11:03:57 2008 -0400
tree ce2980aac2b06a75b18b0c523aa0d859f09c8fad
parent 2ff3e9b61d02b03e3157f7d43ba20ee1452814de

Btrfs: Fix PAGE_CACHE_SHIFT shifts on 32 bit machines

Signed-off-by: Chris Mason <chris.mason@oracle.com>

fs/btrfs/disk-io.c

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 5a7e60d..8935eec 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -159,7 +159,7 @@
 int csum_dirty_buffer(struct btrfs_root *root, struct page *page)
 {
 	struct extent_map_tree *tree;
-	u64 start = page->index << PAGE_CACHE_SHIFT;
+	u64 start = (u64)page->index << PAGE_CACHE_SHIFT;
 	u64 found_start;
 	int found_level;
 	unsigned long len;